<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <!-- 头部马头 -->
      <div class="title-container">
        <h3 class="title">
          <img src="http://destiny001.gitee.io/admin-dist/img/logo.b5a855ee.png" alt="">
        </h3>
      </div>
      <div class="innerBox">
        <!-- 用户名· -->
        <el-form-item prop="username">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            ref="username"
            v-model="loginForm.username"
            placeholder="请输入用户名"
            show-message
            name="username"
            type="text"
            tabindex="1"
            auto-complete="on"
          />
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            show-message
            :type="passwordType"
            placeholder="请输入密码"
            name="password"
            tabindex="2"
            auto-complete="on"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
        <el-button type="info" @click="resetForm('loginForm')">重置</el-button>
        <el-button :loading="loading" type="primary" @click.native.prevent="handleLogin">登录</el-button>
      </div>
    </el-form>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data() {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginRules: {
        username: [{ required: true, message: '用户名不能为空', trigger: 'blur' },
          { pattern: /^[\w]{3,6}$/, message: '用户名格式不正确', trigger: 'blur' }],
        password: [{ required: true, message: '密码不能为空', trigger: 'blur' },
          { min: 3, max: 6, message: '密码格式不正确,应该为3至6位为正确参数', trigger: 'blur' }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(async(valid, obj) => {
        if (!valid) {
          console.log('你的输入出错了')
          this.loading = true
        }
        try {
          await this.$store.dispatch('user/login', this.loginForm)
          this.$router.push('/')
          this.loading = false
        } catch (err) {
          console.log(err)
        } finally {
          this.loading = false
        }
      })
    },
    // 重置
    resetForm(loginForm) {
      this.$refs[loginForm].resetFields()
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#2b4b6b;
$light_gray:#fff;
$cursor: rgb(128, 126, 126);

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;
      color: #606266;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }
  .el-form-item {
    border: 1px solid rgba(200, 200, 200, 0.5);
    border-radius: 5px;
  }
  .el-button {
    float: right;
    margin-left: 10px;
  }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;
.innerBox {
  width: 100%;
  height: 50px;
  padding-bottom: 50px;
}
.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  color: #f00;

  .login-form {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 520px;
    max-width: 100%;
    background-color: #fff;
    padding: 0 30px 50px;
    border-radius: 3px;
  }
  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    display: inline-block;
  }
  // 头像
  .title-container {
    position: relative;
    top: -66px;
    .title {
      width: 160px;
      height: 160px;
      margin: 0px auto 0 auto;
      text-align: center;
      background-color: #fff;
      border: 1px solid #eee;
      box-shadow: 0 0 10px #ddd;
      border-radius: 50%;
      padding: 10px;
      img {
        width: 100%;
        height: 100%;
      }
    }
  }
  // 眼睛
  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
